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Fix "slot" access via mapping reference in assembly

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This commit is contained in:
wechman
2022-08-17 07:53:52 +02:00
parent bb41ddd7ab
commit cf3bae0839
4 changed files with 40 additions and 2 deletions
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test/libsolidity/semanticTests/inlineAssembly/slot_access_via_mapping_pointer.sol
+32
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@@ -0,0 +1,32 @@
contract C {
mapping(uint => uint) private m0;
mapping(uint => uint) private m1;
mapping(uint => uint) private m2;
function f(uint i) public returns (uint slot, uint offset) {
mapping(uint => uint) storage m0Ptr = m0;
mapping(uint => uint) storage m1Ptr = m1;
mapping(uint => uint) storage m2Ptr = m2;
assembly {
switch i
case 1 {
slot := m1Ptr.slot
offset := m1Ptr.offset
}
case 2 {
slot := m2Ptr.slot
offset := m2Ptr.offset
}
default {
slot := m0Ptr.slot
offset := m0Ptr.offset
}
}
}
}
// ----
// f(uint256): 0 -> 0, 0
// f(uint256): 1 -> 1, 0
// f(uint256): 2 -> 2, 0